Oil filter cartridge



J. B. CLARK v 2,331,961

OIL FILTER CARTRIDGE Filed Nov. 5, 1941 nwe-NMA? MIM/fnd.

Patented Oct. 19, 1943 UNITED STATES PATENT OFFICE OIL FILTER CARTRIDGE Joel B. Clark, Kenmore, N. Y.

Application November 5, 1941, Serial No. 417,920

(Cl. 21o- 140) Y Claims.

This invention relates to improvements in, filters, such for example, as may be used in filtering the lubricating oil of an internal combustion engine, and more particularly to improvements in the construction of the replaceable filter cartridges containing the ltering material.

One of the objects of this invention is to pro-Y Fig. 1 is a central, sectional elevation of an oil filtering device having a filter cartridge embodying this invention applied thereto, the cartridge being shown in elevation.

Fig. 2 is a central sectional elevation of the cartridge.

Fig 3 is a sectional plan view thereof, on line 3 3, Fig.v2.

My improved filter cartridge may be used in connection with an oil filtering apparatus of any usual or suitable type, and in Fig. l, the cartridge is shown in an oil filtering device, which may be mounted on the exterior of an engine, but it is to be understood that the particular apparatus shown in this figure is merely illustrative of Vone type of apparatus in which my improved cartridge may be employed. The filtering apparatus shown in Fig. 1 includes a casing I0 of any suitable or desired material, that shown being of tubular form and having a removable cover II which may be suitably clamped or otherwise secured to the casing I to form an oil-tight connection therewith. The casing I0 may be secured by means of brackets I2 to a side of the engine, and the oil to be filtered may enter the casing under pressure from the engine through an inlet duct I4, and ltered oil may be discharged from the casing through a tube I5 secured to a connecting member I6 having a passage I1 extending to the interior of the casing, the connecting member being secured to the cover II.

The casing may, if desired, be provided with a rain plug I3 in the lower end thereof. The cover II may be held in place on the casing I0 in any suitable or desired manner, for example, by means of a clamping screw 2U extending through a member 2|, the ends of which (not shown) maybe secured to the casing I0.

My improved cartridge includes a container or can which may be of any suitable or desired form to t into the casing IE, that shown having a cylindrical body portion or side wall 25, a bottom 26 which may be seamed or otherwise secured to the lower edge of the side wall of the container,l

and a head or upper wall 2'I which may be suitably secured to the upper end of the cylindrical body of the container. While I have for the sake of convenience described the walls 26 and 21 as located at the bottom and top of the cartridge, it will be obvious that therilter cartridge may be arranged in any desired position, and will operate successfully when inverted or arranged on its side.

Within the container is the usual mass of filter material 29 which is preferably packed fairly tightly within the container. This lter mass may be of any suitable or desired material, a fibrous material, such as cotton waste, preferably being employed. If desired, this filter mass may be impregnated with a material for treating the oil or to aid in the filtering of the same.

In the particular construction shown, the oil in order to pass through the filter mass enters the container througlra relatively large number of perforations or openings 30 formed both in the side wall 25 and bottom 26 of the container, and the top V2l of the container is provided with a suitable outlet for the filtered oil. This outlet may be of any suitable or desired form, depending upon the type of housing or casing with which this lter unit or cartridge is to be employed. In

the particular construction illustrated, the top.

2l of the container is provided with a neck 32 having a threaded portion 33 which is formed to cooperate with a ange or sleeve 34 which is secured to the inner face of the top or cover II of the filtering device shown in Fig. 1. The neck communicates with the interior of the casing so that the oil which is passed through the filter mass collects in the neck for discharge through pipe I5 shown in Fig. 1.v

The filter cartridge or unit is preferably provided in the upper portion thereof, next to the cover or head 2l with means of any suitable or desired form for facilitating the collection of the ltered oil, which has passed through the filtermass, in the neck 32, Such means may, for

example, be in the form of a disk shaped piece the neck 32. In order to prevent the particles of filtering material from clogging the coarse screen 36, a layer of cloth or other Woven material 3l may be provided between the screening material 3S and the filter mass 29.

In order to increase the efi'iciency of the filter cartridge, a central perforated tube is provided for the purpose of conducting oil from different parts of the interior of the filter mass to the neck 32 of the cartridge. I have found that very effective results can be obtained if a perforated tube, such as the tube 40, is embedded in the filter mass in such a manner that the bottom of the tube terminates at a distance from the bottom cf the container, and ifthetop of the tube is adjacent to the screen36. My improved tube need not be mounted on or rigidly connected to any partof the filtercarf.

tridge, since it will be retained approximately. in the axial position described by means of the filter mass. Oil entering the lower open end of thetubeor any of the perforations in the tube.- will fiow upwardly in the tube through the `onen upper end thereof, and since this open upper endis in close proximity to the wire screen 35,` the. cil' will readily flow through the fabric 311and this. screen intothe neck 32 for discharge from the cartridge.

Since oil fiows. readily along.. the screening materia1.36,.it. is,v of course, necessary to avoid haying any-.of the oil pass to this screening material :before it hastaken a path of the desired length throughthe filter mass. Consequently, thelupper portion of the side or shell of the container is left unperforated, so that oil entering theupperperforations must pass through asllbstantial quantity of filtering material before passingeto. the screen 3E. Since it is desirableI that allioilv passing through the filter cartridge, takes` paths. throughthe filter mass of substantially equalylengtha. the imperforate upper zone oftheshell offthe container is preferably of awidth. approximately equal to the radius. of the container, o1'. slightly less. For the same reason, theflowerend. ofthe tube 40 is spaced asimilar distance from the bottom of the container.

In the` operation of the filter cartridge in a lter, the. oil to be filteredenters the casing, lil-` throughthe .inlet pipe ldand surrounds all lof the. cartridge except the neck thereof, which has. annif-tight connection with the cover Il.. The, oilfisforced, by pressure lthrough theV holes or perforationsin the sides and bottomof the. can orcontainer of .the cartridge and passes throughthe filter mass to the central tube 4S. The cil is.discharged from the upper end of the. tube. through the. screen 35..into the neck of the. cartridgeA and then flows through the discharge pipev ISback to the engine.

While the .oil preferably passes through the,y filter cartridge from the outside thereof to the. perforated tubeand the. neck, so that heavy particles of foreign matter maydrop from the-inlet tocthe bottom of the casing lwithout plugging or interfering Withthe passage of oil throughr the cartridge, yet if desired, the flow of oil may be-reversed so that thev oil enters the neck and thenfloWs throughl the screening material and perforated tube through the filter mass.

I claim as my invention:

1; AA removable cartridge for use in an oil filter of an internal combustionengine, said cartridge.- including-a container having-the greater part-of` the side perforated and-having one endthereof 4 perforated andhaving the other endi thereof."`

. the side perforated and having one end thereof perforated and having the other end thereof prov vided withan outlet for filtered oil, a body of filteringmaterial packed in said container, and a perforate tube in said container which is spaced fromsaid sides. andssaid perforated end of said container and which receives oil which has passed through said material, said tube being supported. its. operative@ position solely by said material, said tube;.hayinga` discharge. end arf ranged in close proximity to: Said .Outlet 0f Said: container.

3;. A removable, cartridge for'V use, in an oil filter of an internaljcornbution engine, said cartridge. including a jcontainer;having perforations in the side and Lone. end 'thereof and having the` other end `.thereof provided withan outlet for ltered .oil,.. abody, of'filtering material packed in. said container, a.I layer of screening` material interposed between saidltering material and said outletend of rsaidconta'mer and having pas-v sagesin which itered'oilemay fiowfalongsaid ontu letv end to the,outlet:therein,. anda perforatetube embedded in said ltering material andspaced from said pe1forate..sides.and-tendcf saidcontai-ner, one. end ofsaidtubev terminatingin immediate proximityY to-said screening. material-p.

4. A. removable-cartridge. r for. use in an oill filter of an internal combustion.enginelv saidcartridgeincluding a.container having perforations in the side and one end thereof and havingthe. other end-:thereof proyidedwith an. outlet. for filtered oil, a body of filtering materialpacked in said-container, a.. layerl of screeningniaterial interposed.betweenA said filtering material and said-outletend of saidcontainer andhavingpassagesvv in which filtered oil'. may.. flow along. said outlet-endeteJ the outlet therein; and aperforate tube l embeddedinsaidfiltering. material. and spaced substantially equidistant` from the, perforations--insaidf sides-and end; oneend of said tube-terminating-inclose proximitytosaidscreen.- ingmaterial but bei-ngA-unattached therefrom.

5. A-remevable cartridge-for use in an oi11filter oan internal'icombustion engine,v saldcartridgeincludingaafcontainer having perforations in the side and-oneend` thereof and: having.y the. other endgtherecf` provided with-a substantiallyA centrally dispesed-neck, a bodyt of filtering` material substantially fillingf-said1container, a layer` of screening material arranged between said filteringr materialj and saidfother end of said ccntainer and'Vextendingjacross-saidneck, and a perforated'tube embedded in saiddiltering material and ,supportedjsolely thereby and arranged substantially c oaxially with said container, one endof said' tube terminating atsaid` screening material and the other end thereof terminating in spaced relation tothe perforated endof said container.

6-. A removablecartridge gfor, usein an oil. filter of an internal combustion'engine, said cartridge including a container having perforations in the side and one end thereof and having the other end thereof provided With an outlet for filtered oil, a body of iiltering material substantially iilling said containerfa layer of substantially rigid Woven material interposed between said body and said other end of the container and a perforate tube substantially centrally disposed in said container and terminating at one end at said Woven material and at its other end at a distance from the perforate end of said container, equal to about the radius of the container, an annular end portion of the container side extending from said other end thereof to a distance of about the radius of the container being imperforate.

7. A removable cartridge for use in lan oil lter of an internal combustion engine, said cartridge including a container having perforations in the side and one end thereof and having the other end thereof provided with, a substantially centrally disposed neck, a body of ltering material substantially iilling said container, and a layer of screening material arranged between said l- 

